送交者: Enlighten 于 2008-04-23, 22:56:30:
回答: 你的书背得真好。可惜不管用。 由 james_hussein_bond 于 2008-04-23, 22:49:34:
Back to the opportunity loss BS, since it's uncertain whether the guy will be able to get a discount ticket at the airport, the probability factor is therefore included in the calculation.